Meteorological Influences on Seasonal Variation of Fine Particulate Matter in Cities over Southern Ontario, Canada
Figure 8
Backward trajectories starting from Toronto in every 6 hours (a) from June 17 at 12:00 UTC to June 18 at 18:00 UTC, and (b) from June 20 at 0:00 UTC to June 21 at 6:00 UTC in 2006. Every trajectory was run for 36 hours. The upper panels show horizontal movements while the lower panels show vertical movements, in which the unit for -axis is meter above the ground level (AGL).
